Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Cash flows from operating activities:
Net income	$ 4,096,000	$ 3,915,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, plant and equipment	7,317,000	2,996,000
Amortization of intangible assets with finite lives	12,087,000	2,572,000
Amortization of stock-based compensation	1,989,000	2,125,000
Amortization of deferred financing costs	968,000	0
Settlement of intellectual property litigation	(9,979,000)	0
Gain on disposal of property, plant and equipment	(146,000)	(2,000)
Provision for allowance for doubtful accounts	433,000	520,000
Provision for excess and obsolete inventory	1,061,000	1,294,000
Excess income tax benefit from stock-based award exercises	(61,000)	(5,000)
Deferred income tax expense (benefit)	4,307,000	(2,479,000)
Changes in assets and liabilities, net of effects of business acquisition:
Accounts receivable	24,989,000	14,986,000
Inventories	(875,000)	2,369,000
Prepaid expenses and other current assets	409,000	1,836,000
Other assets	201,000	11,000
Accounts payable	(8,572,000)	2,555,000
Accrued expenses and other current liabilities	(4,126,000)	(484,000)
Customer advances and deposits	(2,989,000)	(8,112,000)
Other liabilities, non-current	(749,000)	(269,000)
Interest payable	(471,000)	0
Income taxes payable	(4,525,000)	(436,000)
Net cash provided by operating activities	25,364,000	23,392,000
Cash flows from investing activities:
Purchases of property, plant and equipment	(4,147,000)	(1,463,000)
Net cash used in investing activities	(4,147,000)	(1,463,000)
Cash flows from financing activities:
Repayment of long-term debt under Term Loan Facility	(4,427,000)	0
Net payments under Revolving Loan Facility	(4,100,000)	0
Repayment of principal amounts under capital lease obligations	(1,853,000)	0
Cash dividends paid	(14,177,000)	(9,691,000)
Payment of issuance costs related to equity offering	(626,000)	(78,000)
Payment of deferred financing costs	(104,000)	0
Proceeds from issuance of employee stock purchase plan shares	348,000	348,000
Excess income tax benefit from stock-based award exercises	61,000	5,000
Net cash used in financing activities	(24,878,000)	(9,416,000)
Net (decrease) increase in cash and cash equivalents	(3,661,000)	12,513,000
Cash and cash equivalents at beginning of period	66,805,000	150,953,000
Cash and cash equivalents at end of period	63,144,000	163,466,000
Cash paid during the period for:
Interest	5,538,000	0
Income taxes	2,143,000	4,431,000
Non-cash investing and financing activities:
Cash dividends declared but unpaid (including accrual of dividend equivalents)	2,522,000	5,206,000
Accrued additions to property, plant and equipment	1,147,000	0
Issuance of restricted stock	15,000	0
Accrued Deferred Financing Costs	0	759,000
Accrued Shelf Registration Costs	$ 0	$ 235,000