Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000089800 (http://www.sec.gov/CIK)

Income Tax Disclosure [Abstract]	Period [Axis]
	2013-01-01 - 2013-12-31	2012-01-01 - 2012-12-31	2011-01-01 - 2011-12-31
Income Tax Disclosure [Abstract]
Valuation reserves for other deferred tax assets	7,390,000	11,474,000	8,017,000
Domestic net operating loss carryforward	17,294,000
Foreign net operating losses carryforward	71,541,000
Effect of the repatriation provisions of the American Jobs Creation Act of 2004 and the provisions of the Income Taxes Topic of the ASC	4,411,000	7,572,000	(491,000)
Retained earnings invested by foreign subsidiaries for which provision was not made	7,014,000
Undistributed foreign earnings	1,294,000
Interest related to 2008 tax year	1,991,000
Unrecognized tax benefits adjusted	27,767,000	25,011,000	25,569,000
Amount of unrecognized tax benefits where significant change is reasonably possible	5,551,000
Income tax interest and penalties	103,000	1,532,000	1,163,000
Accrued income tax interest and penalties	6,246,000	6,178,000	8,095,000