Fair Value Measurement (Liabilities on Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Contingent Consideration Arrangements, Range of Outcomes, Value, Low	$ 0
Contingent Consideration Arrangements, Range of Outcomes, Value, High	10,400
Financial liabilities measured at fair value on a recurring basis
Total liabilities at fair value	7,652	$ 7,665
Income approach valuation technique [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	7,652	7,665
Level 1 [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	0	0
Level 2 [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	0	0
Total liabilities at fair value	0	0
Level 3 [Member]
Financial liabilities measured at fair value on a recurring basis
Total liabilities at fair value	7,652	7,665
Level 3 [Member] | Income approach valuation technique [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	$ 7,652	$ 7,665