Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Cash flows from operating activities:
Net (loss) income	$ (2,489,000)	$ 1,439,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization of property, plant and equipment	3,749,000	1,530,000
Amortization of intangible assets with finite lives	6,055,000	1,376,000
Amortization of stock-based compensation	970,000	1,051,000
Amortization of deferred financing costs	484,000	0
Loss (gain) on disposal of property, plant and equipment	1,000	(1,000)
Provision for allowance for doubtful accounts	339,000	630,000
Provision for excess and obsolete inventory	637,000	696,000
Excess income tax benefit from stock-based award exercises	(50,000)	(4,000)
Deferred income tax benefit	(120,000)	(1,641,000)
Changes in assets and liabilities:
Accounts receivable	13,680,000	9,275,000
Inventories	(4,942,000)	(1,498,000)
Prepaid expenses and other current assets	473,000	1,342,000
Other assets	86,000	43,000
Accounts payable	(3,348,000)	(3,017,000)
Accrued expenses and other current liabilities	(2,268,000)	(4,069,000)
Customer advances and deposits	(1,691,000)	(4,106,000)
Other liabilities, non-current	(420,000)	119,000
Interest payable	(77,000)	0
Income taxes payable	(3,446,000)	1,908,000
Net cash provided by operating activities	7,623,000	5,073,000
Cash flows from investing activities:
Purchases of property, plant and equipment	(2,075,000)	(636,000)
Net cash used in investing activities	(2,075,000)	(636,000)
Cash flows from financing activities:
Repayment of long-term debt under Term Loan Facility	(2,212,000)	0
Net borrowings under Revolving Loan Facility	1,000,000	0
Repayment of principal amounts under capital lease obligations	(943,000)	0
Cash dividends paid	(7,123,000)	(4,844,000)
Payment of issuance costs related to equity offering	(492,000)	0
Payment of deferred financing costs	(105,000)	0
Proceeds from issuance of employee stock purchase plan shares	183,000	175,000
Excess income tax benefit from stock-based award exercises	50,000	4,000
Net cash used in financing activities	(9,642,000)	(4,665,000)
Net decrease in cash and cash equivalents	(4,094,000)	(228,000)
Cash and cash equivalents at beginning of period	66,805,000	150,953,000
Cash and cash equivalents at end of period	62,711,000	150,725,000
Cash paid during the period for:
Interest	2,849,000	0
Income taxes	2,004,000	500,000
Non-cash investing and financing activities:
Cash dividends declared but unpaid (including accrual of dividend equivalents)	7,137,000	5,154,000
Accrued additions to property, plant and equipment	1,225,000	0
Issuance of restricted stock	$ 14,000	$ 0