Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net income (loss)	$ 33,759	$ (5,531)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	8,507	6,832
Loss on divestitures	0	55,453
Loss on disposals of property and equipment	490	0
Deferred income taxes	9,225	(9,660)
Amortization of debt origination costs	1,746	2,231
Excess tax benefits from share-based awards	302	550
Stock-based compensation costs	1,713	1,940
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	1,543	5,151
Inventories	(2,899)	(4,327)
Prepaid expenses and other current assets	9,604	5,697
Accounts payable	(8,024)	(3,401)
Accrued liabilities	(1,558)	(3,634)
Noncurrent assets and liabilities	(287)	0
Net cash provided by operating activities	54,121	51,301
Investing Activities
Purchases of property, plant and equipment	(2,554)	(895)
Acquisition of Fleet escrow payment	970	0
Net cash used in investing activities	(1,584)	(895)
Financing Activities
Term loan repayments	(50,000)	(50,000)
Payments of debt origination costs	0	(9)
Proceeds from exercise of stock options	433	3,405
Fair value of shares surrendered as payment of tax withholding	(1,027)	(1,395)
Net cash used in financing activities	(50,594)	(47,999)
Effects of exchange rate changes on cash and cash equivalents	337	(760)
Increase in cash and cash equivalents	2,280	1,647
Cash and cash equivalents - beginning of period	41,855	27,230
Cash and cash equivalents - end of period	44,135	28,877
Interest paid	24,298	18,337
Income taxes paid	$ 2,230	$ 1,357