Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for credit losses	$ 1,096	$ 1,124
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	44,939,000	39,655,000
Common stock, shares outstanding	44,939,000	39,655,000