Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangibles Goodwill and Intangibles (Details)

v2.4.1.9
Goodwill and Intangibles Goodwill and Intangibles (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Dec. 31, 2014
Mar. 31, 2014
Goodwill [Line Items]          
Goodwill impairment $ (20,547)us-gaap_GoodwillImpairmentLoss $ (10,555)us-gaap_GoodwillImpairmentLoss   $ (31,102)us-gaap_GoodwillImpairmentLoss  
Goodwill 0us-gaap_Goodwill     0us-gaap_Goodwill 31,102us-gaap_Goodwill [1]
Goodwill, Transfers     0us-gaap_GoodwillTransfers    
Kentrox [Member]          
Goodwill [Line Items]          
Goodwill 0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_KentroxMember 		    0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_KentroxMember 		10,555us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_KentroxMember
Goodwill, Transfers     (10,555)us-gaap_GoodwillTransfers
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_KentroxMember 		   
CSI [Member]          
Goodwill [Line Items]          
Goodwill 0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSIMember 		    0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSIMember 		20,547us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSIMember
Goodwill, Transfers     (20,547)us-gaap_GoodwillTransfers
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSIMember 		   
CSG [Member]          
Goodwill [Line Items]          
Goodwill impairment   (10,555)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSGMember 		     
Goodwill 0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSGMember 		    0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSGMember 		0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSGMember
Goodwill, Transfers     10,555us-gaap_GoodwillTransfers
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_CSGMember 		   
IBW [Member]          
Goodwill [Line Items]          
Goodwill impairment (20,547)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_IBWMember 		       
Goodwill 0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_IBWMember 		20,547us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_IBWMember 		  0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_IBWMember 		0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_IBWMember
Goodwill, Transfers     $ 20,547us-gaap_GoodwillTransfers
/ us-gaap_StatementBusinessSegmentsAxis
= wstl_IBWMember 		   
[1] Certain amounts have been adjusted to reflect measurement period adjustments related to the CSI acquisition.