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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) | Common Stock [Member] | Additional Paid-in Capital Common Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total
--- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Cumulative-effect adjustment | ASU 2016-01 [Member] | $ 0 | $ 0 | $ 746,000 | $ (746,000) | $ 0
Beginning balance at Mar. 31, 2018 | $ 189,000 | 213,609,000 | 78,510,000 | (5,428,000) | 286,880,000
Beginning balance (in shares) at Mar. 31, 2018 | 18,893,102 |  |  |  |
Adjusted beginning balance at Mar. 31, 2018 | $ 189,000 | 213,609,000 | 79,256,000 | (6,174,000) | 286,880,000
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Compensation recognized under employee stock plans | 0 | 941,000 | 0 | 0 | 941,000
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes | $ 0 | (192,000) | 0 | 0 | (192,000)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) | 23,006 |  |  |  |
Foreign currency translation | $ 0 | 0 | 0 | (715,000) | (715,000)
Net income (loss) | 0 | 0 | (5,495,000) | 0 | (5,495,000)
Ending balance at Jun. 30, 2018 | $ 189,000 | 214,358,000 | 73,761,000 | (6,889,000) | 281,419,000
Ending balance (in shares) at Jun. 30, 2018 | 18,916,108 |  |  |  |
Beginning balance at Mar. 31, 2018 | $ 189,000 | 213,609,000 | 78,510,000 | (5,428,000) | 286,880,000
Beginning balance (in shares) at Mar. 31, 2018 | 18,893,102 |  |  |  |
Adjusted beginning balance at Mar. 31, 2018 | $ 189,000 | 213,609,000 | 79,256,000 | (6,174,000) | 286,880,000
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Foreign currency translation |  |  |  |  | (1,019,000)
Net income (loss) |  |  |  |  | (5,084,000)
Ending balance at Dec. 31, 2018 | $ 188,000 | 212,621,000 | 74,172,000 | (7,193,000) | 279,788,000
Ending balance (in shares) at Dec. 31, 2018 | 18,812,102 |  |  |  |
Beginning balance at Jun. 30, 2018 | $ 189,000 | 214,358,000 | 73,761,000 | (6,889,000) | 281,419,000
Beginning balance (in shares) at Jun. 30, 2018 | 18,916,108 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Compensation recognized under employee stock plans | $ 0 | 1,180,000 | 0 | 0 | 1,180,000
Exercise of stock options | $ 1,000 | 243,000 | 0 | 0 | 244,000
Exercise of stock options (in shares) | 39,032 |  |  |  |
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes | $ 0 | (128,000) | 0 | 0 | (128,000)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) | 8,152 |  |  |  |
Repurchase and cancellation of treasury stock, including fees | $ (2,000) | (4,060,000) | 0 | 0 | (4,062,000)
Repurchase and cancellation of treasury stock, including fees (in shares) | (163,815) |  |  |  |
Foreign currency translation | $ 0 | 0 | 0 | (2,000) | (2,000)
Net income (loss) | 0 | 0 | 3,513,000 | 0 | 3,513,000
Ending balance at Sep. 30, 2018 | $ 188,000 | 211,593,000 | 77,274,000 | (6,891,000) | 282,164,000
Ending balance (in shares) at Sep. 30, 2018 | 18,799,477 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Compensation recognized under employee stock plans | $ 0 | 1,030,000 | 0 | 0 | 1,030,000
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes | $ 0 | (2,000) | 0 | 0 | (2,000)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) | 12,625 |  |  |  |
Foreign currency translation | $ 0 | 0 | 0 | (302,000) | (302,000)
Net income (loss) | 0 | 0 | (3,102,000) | 0 | (3,102,000)
Ending balance at Dec. 31, 2018 | $ 188,000 | 212,621,000 | 74,172,000 | (7,193,000) | 279,788,000
Ending balance (in shares) at Dec. 31, 2018 | 18,812,102 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Cumulative-effect adjustment | ASU 2016-01 [Member] |  |  |  |  | 0
Beginning balance at Mar. 31, 2019 | $ 188,000 | 215,047,000 | 71,407,000 | (6,887,000) | $ 279,755,000
Beginning balance (in shares) at Mar. 31, 2019 | 18,817,400 |  |  |  | 18,817,400
Adjusted beginning balance at Mar. 31, 2019 |  |  |  | (6,887,000) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Compensation recognized under employee stock plans | $ 0 | 988,000 | 0 | 0 | $ 988,000
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes | $ 1,000 | (363,000) | 0 | 0 | (362,000)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) | 36,872 |  |  |  |
Foreign currency translation | $ 0 | 0 | 0 | 599,000 | 599,000
Net income (loss) | 0 | 0 | (6,151,000) | 0 | (6,151,000)
Ending balance at Jun. 30, 2019 | $ 189,000 | 215,672,000 | 65,256,000 | (6,288,000) | 274,829,000
Ending balance (in shares) at Jun. 30, 2019 | 18,854,272 |  |  |  |
Beginning balance at Mar. 31, 2019 | $ 188,000 | 215,047,000 | 71,407,000 | (6,887,000) | $ 279,755,000
Beginning balance (in shares) at Mar. 31, 2019 | 18,817,400 |  |  |  | 18,817,400
Adjusted beginning balance at Mar. 31, 2019 |  |  |  | (6,887,000) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Foreign currency translation |  |  |  |  | $ 1,183,000
Net income (loss) |  |  |  |  | 903,000
Ending balance at Dec. 31, 2019 | $ 190,000 | 217,530,000 | 72,310,000 | (5,704,000) | $ 284,326,000
Ending balance (in shares) at Dec. 31, 2019 | 18,965,030 |  |  |  | 18,965,030
Beginning balance at Jun. 30, 2019 | $ 189,000 | 215,672,000 | 65,256,000 | (6,288,000) | $ 274,829,000
Beginning balance (in shares) at Jun. 30, 2019 | 18,854,272 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Compensation recognized under employee stock plans | $ 0 | 1,053,000 | 0 | 0 | 1,053,000
Exercise of stock options | $ 0 | 405,000 | 0 | 0 | 405,000
Exercise of stock options (in shares) | 52,800 |  |  |  |
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes | $ 0 | (700,000) | 0 | 0 | (700,000)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) | 37,814 |  |  |  |
Foreign currency translation | $ 0 | 0 | 0 | (431,000) | (431,000)
Net income (loss) | 0 | 0 | 6,189,000 | 0 | 6,189,000
Ending balance at Sep. 30, 2019 | $ 189,000 | 216,430,000 | 71,445,000 | (6,719,000) | 281,345,000
Ending balance (in shares) at Sep. 30, 2019 | 18,944,886 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Compensation recognized under employee stock plans | $ 0 | 1,071,000 | 0 | 0 | 1,071,000
Exercise of stock options | $ 1,000 | 29,000 | 0 | 0 | 30,000
Exercise of stock options (in shares) | 3,600 |  |  |  |
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes | $ 0 | 0 | 0 | 0 | 0
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) | 16,544 |  |  |  |
Foreign currency translation | $ 0 | 0 | 0 | 1,015,000 | 1,015,000
Net income (loss) | 0 | 0 | 865,000 | 0 | 865,000
Ending balance at Dec. 31, 2019 | $ 190,000 | $ 217,530,000 | $ 72,310,000 | $ (5,704,000) | $ 284,326,000
Ending balance (in shares) at Dec. 31, 2019 | 18,965,030 |  |  |  | 18,965,030

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