Debt Revolving Credit Agreement (Details) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
	Dec. 31, 2014	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Availability Block, Initial Amount		$ 17,500	$ 17,500
Line of Credit, Availability Block, Six month fixed charge coverage ratio		8,750	8,750
Line of Credit, Availability Block, twelve month fixed charge coverage ratio		0	0
Redemption Permitted, New Secured Notes, Amount		27,500	27,500
Redemption Permitted, Secured Notes, Amount		6,000	6,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100,000	$ 100,000	$ 125,000
Line of Credit, Terms, Provision to Increase the Aggregate Amount of Commitments Under Certain Conditions, Amount		$ 25,000
Debt Instrument, Interest Rate During Period		3.30%	3.10%
Debt Instrument, Maturity Date	Dec. 10, 2019
Line of Credit Facility, Borrowing Capacity excluding minimum excess availability, springing covenant		$ 59,989	$ 59,989
Excess availability, revolving credit facility		$ 13,989	$ 13,989
Minimum | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Ratio of EBITDA to fixed charges, springing covenant		1.1	1.1
Excess availability percentage of borrowing base, lower bound before fixed charge coverage maintenance required			10.00%
Excess availability, lower bound before fixed charge coverage maintenance required		$ 10,000	$ 10,000
Excess availability percentage of borrowing base, lower bound before lender full dominion over collections			12.50%
Excess availability, lower bound before lender full dominion over collections		12,500	$ 12,500
CANADA | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		16,000	16,000	20,000
Letter of Credit [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 16,000	$ 16,000	$ 20,000