Financing Arrangements and Fair Value of Financial Instruments (Details Textual)	1 Months Ended	3 Months Ended	12 Months Ended
	May 31, 2016 USD ($)	Mar. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($) trading_day shares	Oct. 31, 2017 USD ($)	May 12, 2016 USD ($)
Conversion price percentage			130.00%
Business day period			5 days
Consecutive trading day period			5 days
Percent threshold last reported sale price			98.00%
Long-term debt, excluding current maturities		$ 185,635,000	$ 158,957,000
Current debt		1,391,000	1,518,000
Restricted cash and cash equivalents, current		6,600,000
Foreign Operations
Current debt		1,400,000	$ 1,000,000
Restricted cash and cash equivalents, current		$ 1,500,000
Senior notes
Debt instrument, convertible, threshold trading days | trading_day			20
Debt instrument, convertible, threshold consecutive trading days | trading_day			30
Debt conversion, principal amount as basis for conversion rate			$ 1,000
Debt conversion, converted shares for basis principal (shares) | shares			107.1381
Interest rate, effective percentage		11.30%
Convertible Notes due 2021 | Senior notes
Debt instrument, face amount		$ 100,000,000
Interest rate, stated percentage			4.00%
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares		$ 9.33
Convertible debt, fair value		$ 119,300,000	$ 127,300,000
ABL Facility | Federal Funds Rate
Base rate basis spread on variable rate	0.50%
ABL Facility | London Interbank Offered Rate (LIBOR)
Base rate basis spread on variable rate	1.00%
Basis spread on variable rate		2.00%
ABL Facility | Base Rate
Basis spread on variable rate		1.00%
ABL Facility | Minimum | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	1.75%
ABL Facility | Minimum | Base Rate
Basis spread on variable rate	0.75%
ABL Facility | Maximum | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	2.75%
ABL Facility | Maximum | Base Rate
Basis spread on variable rate	1.75%
ABL Facility | Revolving credit facility
Maximum borrowing capacity				$ 225,000,000
Secured Debt			$ 107,100,000
Remaining borrowing capacity		$ 42,900,000
Fixed charge coverage ratio, amount	$ 25,000,000				$ 22,500,000.0
Debt, weighted average interest rate			3.80%
Unused capacity, commitment fee percentage		0.375%
Covenant terms acceleration of other indebtedness					$ 25,000,000
ABL Facility | Revolving credit facility | Minimum
Unused capacity, commitment fee percentage		0.25%
ABL Facility | Revolving credit facility | Maximum
Maximum borrowing capacity				$ 150,000,000.0
Unused capacity, commitment fee percentage		0.375%
Credit Agreement
Letters of credit outstanding, amount		$ 5,900,000
Credit Agreement | Foreign Operations
Letters of credit outstanding, amount		21,500,000
Convertible debt, debt component
Debt issuance cost		2,100,000
Long-term debt, excluding current maturities		78,500,000
Unamortized debt discount		$ 19,300,000