Related Party Transactions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) item	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) item	Jun. 30, 2014 USD ($)
IPC | General Advisory And Management Services
Related Party Transaction
Specified amount of annual fees for ongoing advisory and management services			$ 500
Annual fee for ongoing advisory and management services as a percentage of adjusted EBITDA			0.75%
Amount incurred	$ 300	$ 200	$ 500	$ 500
CT Partners | Executive Positions Search Services
Related Party Transaction
Number of members of the board of directors involved in the related party transaction | item	1		1
Amount incurred	$ 200	$ 200	$ 200	$ 200