Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

v2.4.0.8
Commitments and Contingencies (Details Textual) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
attorneys
Commitments and Contingencies (Textual) [Abstract]  
Agreement term to repurchase certain products shipped to distributor from date of shipment (after 90 days) 90 days
Number of state attorneys general 34
XM-5, FM-5, FM-6, XM-3, and XM-4 [Member]
 
Commitments and Contingencies (Textual) [Abstract]  
Operating performance over design life 15 years
XM-4 [Member]
 
Commitments and Contingencies (Textual) [Abstract]  
Additional payments required if XM-4 continues to operate above baseline specifications $ 10,000
Period beyond expected operating performance of design life for XM-4 5 years
Minimum [Member]
 
Commitments and Contingencies (Textual) [Abstract]  
Operating lease obligations, term 1 year
Maximum [Member]
 
Commitments and Contingencies (Textual) [Abstract]  
Operating lease obligations, term 15 years