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Note 7 - Stock-based Compensation | 9 Months Ended
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Sep. 29, 2019
Notes to Financial Statements |
Shareholders' Equity and Share-based Payments [Text Block] | 7. STOCK-BASED COMPENSATION We recorded non-cash stock compensation expense in each period as follows:
|  | Three-month period ended |  |  | Nine -month period ended |
|  | September 29 , |  |  | September 30 , |  |  | September 29 , |  |  | September 30 , |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Stock options |  | $ | 117 |  |  | $ | 344 |  |  | $ | 433 |  |  | $ | 653 |
Restricted stock grants |  |  | 42 |  |  |  | 19 |  |  |  | 86 |  |  |  | 54 |
Total |  | $ | 159 |  |  | $ | 363 |  |  | $ | 519 |  |  | $ | 707 |
We have stock options outstanding from various stock-based employee compensation plans for which we record compensation cost relating to share-based payment transactions in our financial statements. As of September 29, 2019, there was $924 of total unrecognized compensation cost related to outstanding stock options, which is expected to be recognized over a weighted average period of 1.4 years. The following table summarizes stock option activity for the nine -month period ended September 29, 2019:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2019 |  |  | 1,576,087 |  |  | $ | 6.58 |  |  |  |  |  |  |  |  |
Granted |  |  | 282,500 |  |  |  | 8.27 |  |  |  |  |  |  |  |  |
Exercised |  |  | (194,720 | ) |  |  | 4.45 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (46,082 | ) |  |  | 7.04 |  |  |  |  |  |  |  |  |
Outstanding at September 29, 2019 |  |  | 1,617,785 |  |  | $ | 7.12 |  |  |  | 3.38 |  |  | $ | 3,192 |
Vested and expected to vest at September 29, 2019 |  |  | 1,518,161 |  |  | $ | 7.05 |  |  |  | 3.21 |  |  | $ | 3,113 |
Exercisable at September 29, 2019 |  |  | 1,095,661 |  |  | $ | 6.29 |  |  |  | 2.31 |  |  | $ | 2,870 |
The following assumptions were used to value stock options granted during the nine months ended September 29, 2019:
Risk-Free Interest Rate |  |  | 1.8 | %
Volatility Factor |  |  | 48 | %
Weighted Average Expected Life (Years) |  |  | 5.3 |
Dividends |  |  | 0.0 | %
The weighted average grant date fair value of options granted during the nine months ended September 29, 2019 was $3.77. Cash received from stock option exercises under our stock-based compensation plans for the three -month periods ended September 29, 2019 and September 30, 2018 was $388 and $64, respectively. Cash received from stock option exercises under our stock-based compensation plans for the nine -month periods ended September 29, 2019 and September 30, 2018 was $866 and $1,357, respectively. In April 2019, 20,000 shares of restricted stock were awarded to certain of our employees at a weighted-average grant date fair value of $11.12 per share. In January 2018, 17,500 shares of restricted stock were awarded to certain of our employees at a weighted-average grant date fair value of $7.16 per share. All outstanding restricted shares vest in equal annual installments over three years. Unrecognized compensation cost related to these restricted shares was $188 at September 29, 2019.

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- Definition The entire disclosure for shareholders' equity and share-based payment arrangement. Includes, but is not limited to, disclosure of policy and terms of share-based payment arrangement, deferred compensation arrangement, and employee stock purchase plan (ESPP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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