Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Current assets:
Cash and cash equivalents	$ 66,521	$ 41,637
Accounts receivable, net of allowance for doubtful accounts of $359 and $83 at June 30, 2018 and 2017, respectively	104,040	76,341
Unbilled receivables and cost in excess of billings	39,774	37,332
Inventory	108,585	81,071
Prepaid income taxes	3,761	1,434
Prepaid expenses and other current assets	9,062	8,381
Total current assets	331,743	246,196
Property and equipment, net	50,980	51,643
Goodwill	497,442	380,846
Acquired intangible assets, net	177,904	129,037
Other non-current assets	6,411	8,023
Total assets	1,064,480	815,745
Current liabilities:
Accounts payable	21,323	27,485
Accrued expenses	16,386	20,594
Accrued compensation	21,375	18,406
Deferred revenues and customer advances	12,596	6,360
Total current liabilities	71,680	72,845
Deferred income taxes	13,635	4,856
Income taxes payable	998	855
Secured Long-term Debt, Noncurrent	195,000	0
Other non-current liabilities	11,276	11,772
Total liabilities	292,589	90,328
Commitments and contingencies
Shareholders' equity:
Preferred stock, $0.01 par value; 1,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value; 85,000,000 shares authorized; 46,924,238 and 46,303,075 shares issued and outstanding at June 30, 2018 and 2017, respectively	469	463
Additional paid-in capital	590,163	584,795
Retained earnings	179,968	139,085
Accumulated other comprehensive income	1,291	1,074
Total shareholders' equity	771,891	725,417
Total liabilities and shareholders' equity	$ 1,064,480	$ 815,745