Fair Value of Financial Instruments Contingent Consideration (tables) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |||
| Contingent Consideration Classified as Equity, Fair Value Disclosure | $ 1,982 | $ 3,121 | |
| Contingent consideration benefit | (1,139) | (2,223) | |
| Fair Value, Inputs, Level 3 [Member] | |||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |||
| Contingent Consideration Classified as Equity, Fair Value Disclosure | $ 1,982 | 3,121 | |
| Business Combination, Contingent Consideration, Liability | $ 3,121 | $ 5,344 | |