ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2017

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES.

Components of accounts payable and accrued liabilities

	2017		2016
Accounts payable, principally trade	$	153,862	$	115,514
Accrued employee compensation costs		144,175		119,767
Customer deposits and other unearned income		45,196		44,068
Other accrued liabilities		118,346		89,790
Total	$	461,579	$	369,139