Note 11 - Stockholders' Equity (Tables)

9 Months Ended

Feb. 28, 2016

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

	February 28, 2016
Common Stock Shares
Balance at May 31, 2015		26,990,490
Stock options exercised, net of shares tendered		72,673
Vested restricted stock units, net of shares tendered		8,114
Balance at February 28, 2016		27,071,277
Common Stock
Balance at May 31, 2015	$	27
Stock options exercised, net of shares tendered		—
Vested restricted stock units, net of shares tendered		—
Balance at February 28, 2016	$	27
Additional Paid-in Capital
Balance at May 31, 2015	$	133,307
Stock options exercised, net of shares tendered		282
Vested restricted stock units, net of shares tendered		—
Taxes paid by Company for stock swaps and RSUs		—
Stock-based compensation expense		2,581
Tax benefit from stock based compensation expense		133
Balance at February 28, 2016	$	136,303
Retained Earnings
Balance at May 31, 2015	$	85,098
Net loss applicable to common stockholders		(16,370	)
Balance at February 28, 2016	$	68,728
Non - controlling Interest
Balance at May 31, 2015	$	1,677
Non-controlling interest in net income		119
Distributions to non-controlling interest		(248	)
Balance at February 28, 2016	$	1,548