Supplemental Guarantor Condensed Financial Information - Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ (3,670)	$ (10,315)	$ 3,985
Cash flows from investing activities:
Proceeds from sale of assets	785	2,346	1,321
Capital expenditures	(7,333)	(10,742)	(7,140)
Distribution from affiliate	0	0	0
Net cash used in investing activities	(6,548)	(8,396)	(12,264)
Payments to acquire businesses, net of cash acquired	0	0	(6,445)
Cash flows from financing activities:
Net repayments on ABL Credit Facility	(1,137)
Net borrowings on European Credit Facilities	4,663	0	0
Net borrowings on ABL Credit Facility		18,270	8,280
Deferred financing fees	(88)	(175)	(34)
Distribution from affiliate	0	0	0
Net cash provided by (used in) financing activities	3,438	18,095	8,246
Effect of exchange rate changes on cash	(123)	(431)	(4,270)
Net decrease in cash and cash equivalents	(6,903)	(1,047)	(4,303)
Cash and cash equivalents at beginning of year	8,977	10,024	14,327
Cash and cash equivalents at end of year	2,074	8,977	10,024
Parent
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0	0	0
Cash flows from investing activities:
Proceeds from sale of assets	0	0	0
Capital expenditures	0	0	0
Distribution from affiliate	0	0	0
Net cash used in investing activities	0	0	0
Payments to acquire businesses, net of cash acquired			0
Cash flows from financing activities:
Net repayments on ABL Credit Facility	0
Net borrowings on European Credit Facilities	0
Net borrowings on ABL Credit Facility		0	0
Deferred financing fees	0	0	0
Distribution from affiliate	0	0	0
Net cash provided by (used in) financing activities	0	0	0
Effect of exchange rate changes on cash	0	0	0
Net decrease in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	0	0	0
Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	1,080	(7,396)	(539)
Cash flows from investing activities:
Proceeds from sale of assets	776	324	1,317
Capital expenditures	(4,516)	(5,829)	(4,158)
Distribution from affiliate	2,189	0	0
Net cash used in investing activities	(1,551)	(5,505)	(9,286)
Payments to acquire businesses, net of cash acquired			(6,445)
Cash flows from financing activities:
Net repayments on ABL Credit Facility	(1,137)
Net borrowings on European Credit Facilities	0
Net borrowings on ABL Credit Facility		18,270	8,280
Deferred financing fees	(88)	(175)	(8)
Distribution from affiliate	0	(5,068)	2,165
Net cash provided by (used in) financing activities	(1,225)	13,027	10,437
Effect of exchange rate changes on cash	0	0	0
Net decrease in cash and cash equivalents	(1,696)	126	612
Cash and cash equivalents at beginning of year	1,700	1,574	962
Cash and cash equivalents at end of year	4	1,700	1,574
Non-Guarantor
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(4,750)	(2,919)	4,524
Cash flows from investing activities:
Proceeds from sale of assets	9	2,022	4
Capital expenditures	(2,817)	(4,913)	(2,982)
Distribution from affiliate	0	5,068	(2,165)
Net cash used in investing activities	(2,808)	2,177	(5,143)
Payments to acquire businesses, net of cash acquired			0
Cash flows from financing activities:
Net repayments on ABL Credit Facility	0
Net borrowings on European Credit Facilities	4,663
Net borrowings on ABL Credit Facility		0	0
Deferred financing fees	0	0	(26)
Distribution from affiliate	(2,189)	0	0
Net cash provided by (used in) financing activities	2,474	0	(26)
Effect of exchange rate changes on cash	(123)	(431)	(4,270)
Net decrease in cash and cash equivalents	(5,207)	(1,173)	(4,915)
Cash and cash equivalents at beginning of year	7,277	8,450	13,365
Cash and cash equivalents at end of year	2,070	7,277	8,450
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0	0	0
Cash flows from investing activities:
Proceeds from sale of assets	0	0	0
Capital expenditures	0	0	0
Distribution from affiliate	(2,189)	(5,068)	2,165
Net cash used in investing activities	(2,189)	(5,068)	2,165
Payments to acquire businesses, net of cash acquired			0
Cash flows from financing activities:
Net repayments on ABL Credit Facility	0
Net borrowings on European Credit Facilities	0
Net borrowings on ABL Credit Facility		0	0
Deferred financing fees	0	0	0
Distribution from affiliate	2,189	5,068	(2,165)
Net cash provided by (used in) financing activities	2,189	5,068	(2,165)
Effect of exchange rate changes on cash	0	0	0
Net decrease in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	$ 0	$ 0	$ 0