Summary of Significant Accounting Policies (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets
Gross carrying amount	$ 73,467	$ 69,556
Accumulated amortization	16,150	11,205
Technologies
Finite-Lived Intangible Assets
Gross carrying amount	47,157	43,828
Accumulated amortization	10,384	7,609
Non-compete agreements
Finite-Lived Intangible Assets
Gross carrying amount	1,932	1,932
Accumulated amortization	1,048	862
Licenses
Finite-Lived Intangible Assets
Gross carrying amount	650	650
Accumulated amortization	407	390
Customer lists
Finite-Lived Intangible Assets
Gross carrying amount	3,423	3,423
Accumulated amortization	679	483
Customer relationships
Finite-Lived Intangible Assets
Gross carrying amount	11,690	11,500
Accumulated amortization	2,218	1,054
Trade names
Finite-Lived Intangible Assets
Gross carrying amount	8,615	8,223
Accumulated amortization	$ 1,414	$ 807