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Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
0 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Indefinite-lived Intangible Assets [Line Items]    
Gross carrying value $ 250 $ 250
Indefinite-Lived Net Intangible Assets (Excluding Goodwill) 250 250
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 7,719 7,719
Accumulated amortization (3,279) (2,944)
Net carrying value 4,440 4,775
Noncompete Agreements [Member]
   
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 593 593
Accumulated amortization (439) (426)
Net carrying value 154 167
Partner Relationships [Member]
   
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 145 145
Accumulated amortization (145) (145)
Net carrying value 0 0
Customer Base [Member]
   
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 641 641
Accumulated amortization (270) (239)
Net carrying value 371 402
Technology Rights [Member]
   
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 5,330 5,330
Accumulated amortization (1,949) (1,700)
Net carrying value 3,381 3,630
Tradenames [Member]
   
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 760 760
Accumulated amortization (476) (434)
Net carrying value 284 326
Purchased Technology [Member]
   
Finite-Lived Intangible Assets, Net [Abstract]    
Gross carrying value 350 350
Accumulated amortization (309) (288)
Net carrying value $ 41 $ 62
Weighted average remaining useful life 6 months