Accrued Liabilities and Other (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Continuing operations:
Customer deposits	$ 64,252	$ 49,182
Accrued compensation	18,998	22,587
Self-insured liability accrual	6,678	6,697
Accrued employee benefit costs	3,894	3,730
Accrued sales and use taxes	2,335	1,668
Accrued restructuring	2,144	2,303
Accrued dividends	833	827
Accrued foreign income taxes	449	234
Other	11,100	8,185
Total Continuing operations	110,683	95,413
Discontinued operations:
Environmental remediation liabilities	643	755
Self-insured liability accrual	304	639
Other	474	524
Total Discontinued operations	1,421	1,918
Total other current liabilities	$ 112,104	$ 97,331