CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statement (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 12,010	$ 36,210	$ 33,488
Other comprehensive income (loss)
Unrealized gain (loss) on available-for-sale securities	151	134	(142)
Tax effect on unrealized gain (loss) on available-for-sale securities	(60)	(47)	0
Reclassification for gain included in net income	(100)	(19)	(471)
Tax effect on realized gain on available-for-sale securities	41	7	0
Total other comprehensive income (loss)	32	75	(613)
Comprehensive income	12,042	36,285	32,875
Comprehensive loss attributable to noncontrolling interests	41	(65)	(87)
Comprehensive income attributable to TRC Companies, Inc.	$ 12,083	$ 36,220	$ 32,788