Supplemental Guarantor Information Consolidating Condensed Statement of Cash Flows (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	$ 10,054,000	$ 62,291,000	$ 99,078,000
Investing Activities
Purchases of property and equipment	(14,158,000)	(20,091,000)	(22,160,000)
Proceeds from sale of property and equipment	885,000	159,000	64,000
Payments to Acquire Businesses, Net of Cash Acquired	0	(9,000,000)	(42,430,000)
Proceeds from Divestiture of Business, net	187,552,000	0	0
Other long-term assets	1,001,000	(265,000)	(724,000)
Other	65,000	(245,000)	(13,000)
Net Cash Used for Investing Activities	175,345,000	(29,442,000)	(65,263,000)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	352,455,000	339,314,000	450,595,000
Payments on revolving lines of credit and long-term borrowings	(545,874,000)	(367,500,000)	(454,567,000)
Proceeds from exercise of stock options	512,000	0	4,139,000
Payments of Financing Costs	0	(1,000)	(24,113,000)
Payment of dividends	(1,581,000)	(1,581,000)	(1,588,000)
Purchase of treasury stock	0	0	(21,548,000)
Net Cash Provided (Used) by Financing Activities	(194,488,000)	(29,768,000)	(47,082,000)
Effect of exchange rate changes on cash	83,000	786,000	(271,000)
Increase (decrease) in cash and cash equivalents	(9,006,000)	3,867,000	(13,538,000)
Cash and cash equivalents at beginning of year	38,791,000	34,924,000	48,462,000
Cash and cash equivalents at end of year	29,785,000	38,791,000	34,924,000
The Company (Parent) [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	11,566,000	(46,194,000)	38,724,000
Investing Activities
Purchases of property and equipment	(3,601,000)	(2,266,000)	(6,887,000)
Proceeds from sale of property and equipment	4,000	12,000	0
Payments to Acquire Businesses, Net of Cash Acquired		0	0
Proceeds from Divestiture of Business, net	0
Other long-term assets	833,000	(381,000)	(731,000)
Other	181,195,000	82,999,000	(219,000)
Net Cash Used for Investing Activities	178,431,000	80,364,000	(7,837,000)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	323,187,000	337,044,000	450,595,000
Payments on revolving lines of credit and long-term borrowings	(516,488,000)	(367,500,000)	(438,766,000)
Proceeds from exercise of stock options	512,000		4,139,000
Payments of Financing Costs		(1,000)	(24,113,000)
Payment of dividends	(1,581,000)	(1,581,000)	(1,588,000)
Purchase of treasury stock			(21,548,000)
Net Cash Provided (Used) by Financing Activities	(194,370,000)	(32,038,000)	(31,281,000)
Effect of exchange rate changes on cash	0	0	0
Increase (decrease) in cash and cash equivalents	(4,373,000)	2,132,000	(394,000)
Cash and cash equivalents at beginning of year	5,774,000	3,642,000	4,036,000
Cash and cash equivalents at end of year	1,401,000	5,774,000	3,642,000
Combined Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	(68,792,000)	26,243,000	49,396,000
Investing Activities
Purchases of property and equipment	(4,020,000)	(9,643,000)	(5,316,000)
Proceeds from sale of property and equipment	13,000	23,000	16,000
Payments to Acquire Businesses, Net of Cash Acquired		(9,000,000)	(42,430,000)
Proceeds from Divestiture of Business, net	187,552,000
Other long-term assets	0	0	0
Other	(113,067,000)	(10,849,000)	73,000
Net Cash Used for Investing Activities	70,478,000	(29,469,000)	(47,657,000)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	0	2,140,000	0
Payments on revolving lines of credit and long-term borrowings	(2,391,000)	0	(2,111,000)
Proceeds from exercise of stock options	0		0
Payments of Financing Costs		0	0
Payment of dividends	0	0	0
Purchase of treasury stock			0
Net Cash Provided (Used) by Financing Activities	(2,391,000)	2,140,000	(2,111,000)
Effect of exchange rate changes on cash	0	0	0
Increase (decrease) in cash and cash equivalents	(705,000)	(1,086,000)	(372,000)
Cash and cash equivalents at beginning of year	1,018,000	2,104,000	2,476,000
Cash and cash equivalents at end of year	313,000	1,018,000	2,104,000
Combined Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	1,891,000	14,326,000	65,516,000
Investing Activities
Purchases of property and equipment	(6,537,000)	(8,182,000)	(9,957,000)
Proceeds from sale of property and equipment	868,000	124,000	48,000
Payments to Acquire Businesses, Net of Cash Acquired		0	0
Proceeds from Divestiture of Business, net	0
Other long-term assets	168,000	116,000	7,000
Other	20,000	46,000	133,000
Net Cash Used for Investing Activities	(5,481,000)	(7,896,000)	(9,769,000)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	29,268,000	130,000	0
Payments on revolving lines of credit and long-term borrowings	(26,995,000)	0	(13,690,000)
Proceeds from exercise of stock options	0		0
Payments of Financing Costs		0	0
Payment of dividends	(2,694,000)	(4,525,000)	(54,558,000)
Purchase of treasury stock			0
Net Cash Provided (Used) by Financing Activities	(421,000)	(4,395,000)	(68,248,000)
Effect of exchange rate changes on cash	83,000	786,000	(271,000)
Increase (decrease) in cash and cash equivalents	(3,928,000)	2,821,000	(12,772,000)
Cash and cash equivalents at beginning of year	31,999,000	29,178,000	41,950,000
Cash and cash equivalents at end of year	28,071,000	31,999,000	29,178,000
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	65,389,000	67,916,000	(54,558,000)
Investing Activities
Purchases of property and equipment	0	0	0
Proceeds from sale of property and equipment	0	0	0
Payments to Acquire Businesses, Net of Cash Acquired		0	0
Proceeds from Divestiture of Business, net	0
Other long-term assets	0	0	0
Other	(68,083,000)	(72,441,000)	0
Net Cash Used for Investing Activities	(68,083,000)	(72,441,000)	0
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	0	0	0
Payments on revolving lines of credit and long-term borrowings	0	0	0
Proceeds from exercise of stock options	0		0
Payments of Financing Costs		0	0
Payment of dividends	2,694,000	4,525,000	54,558,000
Purchase of treasury stock			0
Net Cash Provided (Used) by Financing Activities	2,694,000	4,525,000	54,558,000
Effect of exchange rate changes on cash	0	0	0
Increase (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