CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 12,010	$ 36,210	$ 33,488
Non-cash items:
Depreciation and amortization	8,800	6,903	5,508
Stock-based compensation expense	4,658	3,832	6,550
Provision for doubtful accounts	0	408	755
Arena Towers litigation reversal	0	0	(11,061)
Deferred income taxes	2,512	(19,159)	(997)
Other non-cash items	(1,034)	(133)	(920)
Changes in operating assets and liabilities:
Accounts receivable	(5,916)	(11,655)	(5,439)
Insurance recoverable - environmental remediation	(15,757)	(561)	5,083
Income taxes	864	(380)	(5,195)
Restricted investments	4,603	4,521	9,295
Prepaid expenses and other current assets	1,676	(1,131)	(1,161)
Long-term prepaid insurance	2,976	2,775	3,138
Other assets	667	553	(977)
Accounts payable	352	778	4,981
Accrued compensation and benefits	2,003	(2,152)	7,443
Deferred revenue	(3,707)	(8,732)	(13,484)
Environmental remediation liabilities	(858)	1,369	(351)
Other accrued liabilities	7,537	968	(17,218)
Net cash provided by operating activities	21,386	14,414	19,438
Cash flows from investing activities:
Additions to property and equipment	(5,065)	(3,891)	(7,114)
Withdrawals from restricted investments	2,241	2,131	2,045
Acquisition of businesses, net of cash acquired	(3,788)	(6,865)	(3,464)
Earnout and net working capital payments on acquisitions	(252)	0	(883)
Proceeds from sale of land	0	0	250
Proceeds from sale of fixed assets	110	43	82
Investments in and advances to unconsolidated affiliates	(17)	(22)	(16)
Net cash used in investing activities	(6,771)	(8,604)	(9,100)
Cash flows from financing activities:
Payments on long-term debt and other	(9,535)	(5,405)	(8,236)
Payments on capital lease obligations	(628)	(532)	(27)
Proceeds from long-term debt and other	4,904	4,259	4,415
Earnout and net working capital payments on acquisitions	(872)	(154)	0
Shares repurchased to settle tax withholding obligations	(2,209)	(2,767)	(760)
Excess tax benefit from stock-based awards	3,115	203	0
Proceeds from exercise of stock options	71	161	2
Net cash used in financing activities	(5,154)	(4,235)	(4,606)
Increase in cash and cash equivalents	9,461	1,575	5,732
Cash and cash equivalents, beginning of period	18,136	16,561	10,829
Cash and cash equivalents, end of period	27,597	18,136	16,561
Supplemental cash flow information:
Income taxes paid	2,205	1,460	2,103
Non-cash consideration for assets acquired	1,627	647	768
Issuance of common stock in connection with businesses acquired	295	515	266
Capital expenditures included in accounts payable	490	509	325
Interest paid	192	319	672
Assets acquired through capital lease obligations	0	1,160	756
Land transfer	0	1,500	0
Subordinated note payable recorded in connection with businesses acquired	$ 0	$ 1,500	$ 0