Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Goodwill and other intangible assets
Goodwill, Gross	$ 10,626	$ 10,530
Goodwill, Net	10,626	10,530
Other intangible assets, Accumulated Amortization	(7,857)	(5,750)
Other intangible assets, Net	3,352
Total intangible assets, Gross	22,471	22,158
Total intangible assets, Net	14,614	16,408
Amortization relating to other intangible assets
2014	1,362
2015	1,070
2016	552
2017	368
Other intangible assets, Net	3,352
Technology, patents and trade names
Goodwill and other intangible assets
Other intangible assets, Gross	4,965	4,859
Other intangible assets, Accumulated Amortization	(3,475)	(2,825)
Other intangible assets, Net	1,490	2,034
Amortization relating to other intangible assets
Other intangible assets, Net	1,490	2,034
Customer relationships and non-compete agreements
Goodwill and other intangible assets
Other intangible assets, Gross	4,860	4,749
Other intangible assets, Accumulated Amortization	(2,698)	(2,232)
Other intangible assets, Net	2,162	2,517
Amortization relating to other intangible assets
Other intangible assets, Net	2,162	2,517
Contract-based
Goodwill and other intangible assets
Other intangible assets, Gross	2,020	2,020
Other intangible assets, Accumulated Amortization	(1,684)	(693)
Other intangible assets, Net	336	1,327
Amortization relating to other intangible assets
Other intangible assets, Net	$ 336	$ 1,327