Intangible Assets (Details) (USD $)	1 Months Ended	3 Months Ended								12 Months Ended
	Dec. 31, 2006	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets [Abstract]
Amortization of intangible assets		$ 272,000	$ 273,000	$ 273,000	$ 273,000	$ 316,000	$ 335,000	$ 335,000	$ 335,000	$ 1,091,000	$ 1,321,000	$ 1,522,000
Indefinite life intangibles acquired	250,000
Finite-lived intangible assets [Abstract]
Net carrying value		2,113,000								2,113,000
Indefinite life intangible assets [Abstract]
Gross carrying value		250,000				250,000				250,000	250,000
Net carrying value		250,000				250,000				250,000	250,000
Intangible assets, total [Abstract]
Gross carrying value		7,719,000				7,719,000				7,719,000	7,719,000
Accumulated amortization		(5,356,000)				(4,265,000)				(5,356,000)	(4,265,000)
Net carrying value		2,363,000				3,454,000				2,363,000	3,454,000
Noncompete Agreements [Member]
Finite-lived intangible assets [Abstract]
Gross carrying value		593,000				593,000				593,000	593,000
Accumulated amortization		(527,000)				(477,000)				(527,000)	(477,000)
Net carrying value		66,000				116,000				66,000	116,000
Partner Relationships [Member]
Finite-lived intangible assets [Abstract]
Gross carrying value		145,000				145,000				145,000	145,000
Accumulated amortization		(145,000)				(145,000)				(145,000)	(145,000)
Net carrying value		0				0				0	0
Customer Base [Member]
Finite-lived intangible assets [Abstract]
Gross carrying value		641,000				641,000				641,000	641,000
Accumulated amortization		(453,000)				(361,000)				(453,000)	(361,000)
Net carrying value		188,000				280,000				188,000	280,000
Technology Rights [Member]
Finite-lived intangible assets [Abstract]
Gross carrying value		5,330,000				5,330,000				5,330,000	5,330,000
Accumulated amortization		(3,582,000)				(2,689,000)				(3,582,000)	(2,689,000)
Net carrying value		1,748,000				2,641,000				1,748,000	2,641,000
Tradenames [Member]
Finite-lived intangible assets [Abstract]
Gross carrying value		760,000				760,000				760,000	760,000
Accumulated amortization		(649,000)				(593,000)				(649,000)	(593,000)
Net carrying value		$ 111,000				$ 167,000				$ 111,000	$ 167,000