Revolving Line of Credit and Long Term Debt - Terms (Details) - USD ($)				3 Months Ended		6 Months Ended		10 Months Ended		13 Months Ended	26 Months Ended	39 Months Ended
	May. 09, 2015	May. 09, 2014	Apr. 20, 2012	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	May. 09, 2013
Long-term debt
Loss on extinguishment of debt				$ 638,000	$ 2,886,000	$ 638,000	$ 2,886,000
First Lien Credit Agreement May 2013 Amendment
Long-term debt
Increase in borrowing capacity														$ 50,000,000
Revolving Credit Facility | First Lien Credit Agreement
Long-term debt
Term of debt instrument			6 years
Maximum borrowing capacity			$ 30,000,000
Long-term debt, amount outstanding				0		0				$ 0	$ 0	$ 0	$ 0
Letters of credit outstanding				100,000		100,000				100,000	100,000	100,000	100,000
Available borrowing capacity				29,900,000		$ 29,900,000				29,900,000	29,900,000	29,900,000	29,900,000
Commitment fee, unused amounts (as a percent)						0.50%
Term Loan | First Lien Credit Agreement
Long-term debt
Term of debt instrument			6 years
Face amount of debt			$ 345,000,000
Original issue discount			$ 3,500,000	121,000		$ 121,000				121,000	121,000	121,000	312,000
Payments on debt				223,000,000
Loss on extinguishment of debt				638,000
Write-off of deferred financing fees, loss on original issue discount and lender fees excluded from pro forma earnings per share				489,000
Loss on original issue discount				149,000
Long-term debt, amount outstanding				$ 183,316,000		$ 183,316,000				$ 183,316,000	$ 183,316,000	$ 183,316,000	$ 408,456,000
Term Loan | First Lien Credit Agreement | Minimum
Long-term debt
Excess Cash Flow payment, percentage						25.00%
Term Loan | First Lien Credit Agreement | Maximum
Long-term debt
Excess Cash Flow payment, percentage						50.00%
Term Loan | First Lien Credit Agreement | June 2012 through March 31, 2013
Long-term debt
Periodic payment required									$ 863,000
Term Loan | First Lien Credit Agreement | June 30, 2013 through March 31, 2014
Long-term debt
Periodic payment required								$ 979,000
Term Loan | First Lien Credit Agreement | June 30, 2014 through April 20, 2018
Long-term debt
Frequency of periodic payment												quarterly
Term Loan | First Lien Credit Agreement May 2013 Amendment | Adjusted Base Rate (ABR) | Minimum
Long-term debt
Variable rate, basis spread (as a percent)						2.25%
Term Loan | First Lien Credit Agreement May 2013 Amendment | LIBOR - Eurodollar Rate
Long-term debt
Variable rate, basis spread (as a percent)						3.25%
Variable rate basis, floor (as a percent)											1.00%
Variable rate (as a percent)				4.25%		4.25%				4.25%	4.25%	4.25%
Term Loan | First Lien Credit Agreement May 2014 Amendment
Long-term debt
Increase in borrowing capacity		$ 35,000,000
Term Loan | First Lien Credit Agreement May 2014 Amendment | June 30, 2014 through April 20, 2018
Long-term debt
Periodic payment required										$ 1,100,000
Term Loan | Second Lien Credit Agreement
Long-term debt
Term of debt instrument			6 years 6 months
Face amount of debt			$ 95,000,000
Original issue discount			$ 950,000
Payments on debt		$ 10,000,000
Loss on extinguishment of debt	$ 2,900,000
Write-off of deferred financing fees, loss on original issue discount and lender fees excluded from pro forma earnings per share	1,500,000
Lenders fees for extinguishment of debt	500,000
Loss on original issue discount	$ 900,000