Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Assets:
Assets fair value		$ 14,940	$ 14,928
Liabilities:
Liabilities fair value		2,532	1,048
Money Market Funds
Assets:
Assets fair value	[1]	14,940	14,928
Contingent Consideration
Liabilities:
Liabilities fair value	[2]	2,532	1,048
Level 1
Assets:
Assets fair value		14,940	14,928
Level 1 | Money Market Funds
Assets:
Assets fair value	[1]	14,940	14,928
Level 3
Liabilities:
Liabilities fair value		2,532	1,048
Level 3 | Contingent Consideration
Liabilities:
Liabilities fair value	[2]	$ 2,532	$ 1,048

[1] Included in cash and cash equivalents

[2] Included in other current liabilities