Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Document Period End Date	Sep. 30, 2017
Cash Flows from Operations
Net Income	$ 80,678	$ 70,987
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization	36,231	35,158
Deferred income taxes	(6,659)	2,585
Net gains on disposal of property	(270)	(1,786)
Net income attributable to noncontrolling interests	(229)	(178)
Changes in assets and liabilities:
Trade receivables	(86,433)	(73,623)
Merchandise inventory	(94,141)	(83,059)
Other current assets	1,489	5,632
Other non-current assets	(2,503)	24,369
Trade accounts payable	83,768	16,571
Accrued payroll and benefit costs	(36,019)	(21,835)
Other current liabilities	20,875	17,673
Other non-current liabilities	(24,646)	(51,832)
Total adjustments to net income	(108,537)	(130,325)
Net cash used by operations	(27,859)	(59,338)
Cash Flows from Investing Activities
Proceeds from disposal of property	2,015	3,301
Capital expenditures for property	(26,674)	(24,820)
Acquisition of business, net of cash acquired	0	(59,946)
Net cash used by investing activities	(24,659)	(81,465)
Cash Flows from Financing Activities
Net increase in short-term borrowings	76,139	168,871
Repayment of long-term debt	0	(1,853)
Principal payments under capital leases	(3,613)	(4,116)
Sale of common stock	15,558	15,192
Purchases of common stock	(11,424)	(8,793)
Sales of noncontrolling interests’ common stock	627	0
Purchases of noncontrolling interests’ common stock	(392)	(356)
Dividends paid	(15,910)	(14,962)
Net cash provided by financing activities	60,985	153,983
Net Increase in Cash	8,467	13,180
Cash, Beginning of Year	43,339	37,931
Cash, End of Period	51,806	51,111
Non-cash Investing and Financing Activities
Acquisitions of equipment under capital leases	$ 1,407	$ 314