Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows (used in) provided by operating activities:
Net income	$ 26,885	$ 20,299
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	40,812	41,825
Amortization of deferred financing costs and original issuance discounts	2,766	2,459
Provision for doubtful accounts	304	419
Deferred income tax expense	1,443	1,713
Deferred rent	1,155	2,915
Undistributed income in unconsolidated joint ventures	(301)	(226)
Loss on disposal of assets	24	528
Non-employee equity based compensation	365	3,265
Stock option expense	942	3,222
Restricted stock units - time-based	252
Restricted stock units - performance-based	593
Director - non-cash compensation	59
Changes in operating assets and liabilities, net of effects of acquired businesses:
Decrease in accounts receivable	8,791	20,823
Increase in inventories	(68,741)	(5,328)
(Increase) decrease in prepaid expenses and other current assets	(9,137)	866
Decrease in accounts payable, accrued expenses and income taxes payable	(29,220)	(40,462)
Net cash (used in) provided by operating activities	(23,008)	52,318
Cash flows used in investing activities:
Cash paid in connection with acquisitions, net of cash acquired	(21,325)	(70,547)
Capital expenditures	(44,406)	(30,854)
Proceeds from disposal of property and equipment	21	5
Net cash used in investing activities	(65,710)	(101,396)
Cash flows provided by financing activities:
Repayment of loans, notes payable and long-term obligations	(26,062)	(76,978)
Proceeds from loans, notes payable and long-term obligations	112,293	128,140
Exercise of stock options	482	67
Debt issuance costs	(56)
Net cash provided by financing activities	86,657	51,229
Effect of exchange rate changes on cash and cash equivalents	(780)	2,208
Net (decrease) increase in cash and cash equivalents and restricted cash	(2,841)	4,359
Cash and cash equivalents and restricted cash at beginning of period	54,408	64,765
Cash and cash equivalents and restricted cash at end of period	51,567	69,124
Cash paid during the period
Interest	49,489	34,770
Income taxes, net of refunds	$ 46,617	$ 49,588