Fair Value Measurement (Liabilities on Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financial liabilities measured at fair value on a recurring basis
Total liabilities at fair value	$ 8,555	$ 17,054
Income approach valuation technique [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	8,555	17,054
Level 1 [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	0	0
Total liabilities at fair value
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	8,555	17,054
Level 3 [Member] | Income approach valuation technique [Member]
Financial liabilities measured at fair value on a recurring basis
Contingent Liability, Fair Value Disclosure	$ 8,555	$ 17,054