Financing Arrangements and Fair Value of Financial Instruments (Details Textual)			1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Oct. 15, 2017 USD ($)	May 12, 2016 USD ($)	Sep. 30, 2010 USD ($) shares	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) $ / shares	Dec. 31, 2016 USD ($) trading_day $ / shares shares	May 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2015 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%
Debt issuance cost					$ 2,300,000
Long-term debt, excluding current maturities					139,721,000	$ 72,900,000
Long-term debt					224,840,000	156,268,000
Current debt					85,119,000	83,368,000
Restricted cash and cash equivalents, current					6,600,000
Prepaid Expenses and Other Current Assets
Restricted cash and cash equivalents, current					8,000,000	7,400,000
Foreign Operations
Current debt					0	$ 0
Restricted cash and cash equivalents, current					$ 1,400,000
Senior notes
Debt conversion, converted shares for basis principal (shares) | shares						107.1381
Debt conversion, principal amount as basis for conversion rate						$ 1,000
Debt instrument, convertible, threshold trading days | trading_day						20
Debt instrument, convertible, threshold consecutive trading days						30 days
Net deferred tax liabilities						$ 8,700,000
Interest rate, effective percentage					11.30%
Convertible Notes due 2017 | Senior notes
Debt instrument, face amount						172,500,000.0
Unsecured debt, principal amount						$ 83,300,000
Interest rate, stated percentage						4.00%
Debt conversion, converted shares for basis principal (shares) | shares			90.8893
Debt conversion, principal amount as basis for conversion rate			$ 1,000
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares						$ 11
Debt instrument, fair value					$ 83,000,000	$ 84,400,000
Long-term debt					83,252,000	82,988,000
Convertible Notes due 2021 | Senior notes
Debt instrument, face amount						100,000,000
Unsecured debt, principal amount					$ 130,400,000	$ 110,500,000
Interest rate, stated percentage						4.00%
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares					$ 9.33
Maximum borrowing capacity						$ 225,000,000
Long-term debt					$ 76,221,000	72,900,000
ABL Facility
Remaining borrowing capacity					$ 26,500,000
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		3.50%			3.25%
ABL Facility | Base Rate
Basis spread on variable rate		2.50%			2.25%
ABL Facility | Minimum | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate		2.25%
ABL Facility | Minimum | Base Rate
Basis spread on variable rate		1.25%
ABL Facility | Maximum | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate		3.50%
ABL Facility | Maximum | Base Rate
Basis spread on variable rate		2.50%
ABL Facility | Revolving credit facility
Maximum borrowing capacity							$ 90,000,000.0
Escrow deposit					$ 84,900,000
Long-term line of credit					63,500,000
Fixed charge coverage ratio, amount		$ 15,000,000
Current borrowing capacity					90,000,000
Long-term debt					$ 63,500,000	$ 0
Unused capacity, commitment fee percentage					0.625%
Covenant terms acceleration of other indebtedness		$ 25,000,000
ABL Facility | Revolving credit facility | Minimum
Unused capacity, commitment fee percentage		0.375%
ABL Facility | Revolving credit facility | Maximum
Maximum borrowing capacity							150,000,000.0
Unused capacity, commitment fee percentage		0.625%
Credit Agreement
Letters of credit outstanding, amount					$ 6,000,000
Credit Agreement | Foreign Operations
Letters of credit outstanding, amount					18,700,000
Credit Agreement | Revolving credit facility
Maximum borrowing capacity								$ 150,000,000.0	$ 200,000,000.0
Long-term line of credit							$ 0
Interest costs incurred				$ 1,100,000
Convertible debt, debt component
Debt issuance cost					2,600,000
Long-term debt, excluding current maturities					76,200,000
Unamortized debt discount					21,500,000
Convertible debt, debt component | Senior notes
Interest rate, stated percentage						10.50%
Debt instrument, fair value						$ 75,200,000
Convertible debt, equity component
Debt instrument, conversion equity amount						24,800,000
Debt issuance cost					$ 900,000
Debt instrument, conversion equity, carrying amount net of issuance costs and deferred tax liability						$ 15,200,000
Subsequent event | Amended ABL Facility | Minimum | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	1.75%
Subsequent event | Amended ABL Facility | Minimum | Base Rate
Basis spread on variable rate	1.75%
Subsequent event | Amended ABL Facility | Maximum | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	2.75%
Subsequent event | Amended ABL Facility | Maximum | Base Rate
Basis spread on variable rate	2.75%
Subsequent event | Amended ABL Facility | Revolving credit facility
Maximum borrowing capacity	$ 150,000,000
Long-term line of credit	60,900,000
Remaining borrowing capacity	86,400,000
Current borrowing capacity	$ 147,300,000
Subsequent event | Amended ABL Facility | Revolving credit facility | Minimum
Unused capacity, commitment fee percentage	0.25%
Subsequent event | Amended ABL Facility | Revolving credit facility | Maximum
Unused capacity, commitment fee percentage	0.375%