CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Cash flows from operating activities
Net income	$ 12,227	$ 8,570
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	7,048	7,024
Non-cash restructuring and realignment charges		105
Stock-based compensation expense	3,087	2,297
Deferred income tax expense	(821)	(1,334)
Excess tax benefit from stock-based awards	(685)
Other	53	204
Changes in operating assets and liabilities
Accounts receivable — trade	(2,585)	894
Accounts receivable — other	2,531	(1,816)
Inventories	1,002	1,159
Other current and noncurrent assets	(302)	3,291
Accounts payable	951	(5,805)
Accrued liabilities and other	(3,083)	(492)
Net cash provided by operating activities	19,423	14,097
Cash flows from investing activities
Additions to property, plant and equipment	(5,310)	(6,001)
Proceeds — insurance claim	250
Net cash used in investing activities	(5,060)	(6,001)
Cash flows from financing activities
Borrowings under credit facility	17,000
Payments under credit facility	(11,800)	(6,000)
Excess tax benefit from stock-based awards		15
Payment of dividends	(709)	(703)
Cash payments related to tax withholdings from stock-based awards	(277)
Net cash provided by (used in) financing activities	4,214	(6,688)
Effect of exchange rate changes on cash	(418)	(25)
Net increase in cash, cash equivalents and restricted cash	18,159	1,383
Cash, cash equivalents and restricted cash at beginning of period	13,428	8,517
Cash, cash equivalents and restricted cash at end of period	31,587	9,900
Supplemental disclosures of cash flow information
Cash paid for interest	244	321
Cash paid for income taxes, net	4,740	4,797
Supplemental disclosure of non-cash investing activities
Purchase of property, plant and equipment through accounts payable	$ 206	$ 2,525