Debt and Operating Leases (Details) (USD $)	3 Months Ended	12 Months Ended										12 Months Ended				1 Months Ended		12 Months Ended
	Jun. 30, 2013	Dec. 31, 2013 Lease	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Chicago, Illinois [Member] sqft	Dec. 31, 2013 Daytona Beach, Florida [Member] sqft	Dec. 31, 2013 Hartland, Wisconsin [Member] sqft	Dec. 31, 2013 Mississauga, Ontario [Member] sqft	Dec. 31, 2013 Morrisville, North Carolina [Member] sqft	Dec. 31, 2013 Lease Line Credit Facility [Member]	Dec. 31, 2012 Lease Line Credit Facility [Member]	Dec. 31, 2013 LIBOR [Member]	Dec. 31, 2013 Base Rate [Member]	Dec. 31, 2013 Term Loan [Member]	Dec. 31, 2013 Revolving Credit Facility [Member]	Jun. 30, 2011 Senior Secured Notes [Member]	Apr. 30, 2010 Senior Secured Notes [Member]	Dec. 31, 2013 Senior Secured Notes [Member]	Dec. 31, 2011 Senior Secured Notes [Member]
Debt Instrument [Line Items]
Issuance date for debt instrument														Apr. 23, 2013	Apr. 23, 2013
Debt instrument maturity period														6 years	5 years
Principal amount of notes issued														$ 255,000,000	$ 20,000,000	$ 52,000,000	$ 200,000,000		$ 252,000,000
Amount outstanding under credit facility											900,000				0
Notes issued specified as percentage of principal amount (in hundredths)														99.00%		103.00%	97.266%
Debt to adjusted EBITDA ratio		5.3
Maximum allowable debt to adjusted EBITDA ratio		5.5
Floor rate of loan (in hundredths)												1.25%	2.25%
Margin rate for borrowings (in hundredths)												4.75%	3.75%
Interest rate under credit agreement (in hundredths)		6.00%								7.40%
Effective interest rate (in hundredths)		6.50%
Weighted average interest rate (in hundredths)		6.00%
Increase in interest rate in case of default (in hundredths)		2.00%
Interest rate cap, period		2 years
Interest rate cap (in hundredths)		3.00%
Percentage of total amount of principal outstanding (in hundredths)		50.00%
Interest rate cap, cost		65,000
Capitalization of debt issuance costs		4,588,000
Required principal payment		1,275,000												2,490,000
Long-term Debt, Fiscal Year Maturity [Abstract]
2014		2,490,000
2015		2,490,000
2016		2,490,000
2017		2,490,000
2018		2,490,000
2019		226,275,000
Additional voluntary payment of term loan		15,000,000
Interest rate of notes (in hundredths)																	11.75%		11.75%
Maturity date of notes																		May 01, 2015
Issuance cost of notes																	9,015,000
Capitalized consent fees																1,528,000
Consent fees not capitalized																1,686,000
Interest expense		21,551,000	32,334,000	29,135,000
Interest paid		24,847,000	29,792,000	25,723,000
Amortization of notes issuance costs		1,162,000	2,049,000	1,659,000
Amortization of net debt discount		487,000	675,000	733,000
Amortization of net debt discount and issuance costs		1,649,000	2,724,000	2,393,000										2,550,000
Unamortized discount on notes	5,235,000	5,235,000
Unamortized net debt discount	1,724,000	1,724,000
Unamortized debt issue costs and debt discount		4,127,000	2,294,000
Repayments of assumed debt				4,591,000
Early retirement costs associated with the extinguishment of the Notes	16,863,000	16,863,000	0	0
Loss on debt extinguishment	(23,822,000)	(23,822,000)	0	0
Unamortized net discount related to Term Loan and Notes		2,293,000	1,954,000
Line of credit, maximum borrowing capacity										15,000,000
Expiration date										Mar. 31, 2013
Operating Leased Assets [Line Items]
Number of largest operating leases		5
Non-cancelable operating leases [Abstract]
Square Footage					22,633	36,000	81,000	24,000	14,746
Annual Lease Payments					367,000	177,000	716,000	665,000	241,000
End of Term					December 31, 2015	December 31, 2015	November 30, 2025	February 28, 2020	September 30, 2016
Total rent expense		3,184,000	3,351,000	3,443,000
Future minimum lease payments under all non-cancelable operating leases [Abstract]
2014		2,313,000
2015		2,318,000
2016		1,593,000
2017		1,382,000
2018		1,382,000
Thereafter		5,734,000
Total minimum lease payments		14,722,000
Operating leases subleases revenue received		$ 76,000	$ 227,000