Consolidated Balance Sheets Parentheticals - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Consolidated Balance Sheets [Abstract]
Accumulated depreciation and amortization, property and equipment	$ 61,302	$ 61,741
Accumulated intangible assets amortization	$ 5,444	$ 5,003
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	225,000	225,000
Common stock, shares issued	107,711	106,679
Treasury stock, shares	741	407