Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Activity in Stock Award Plans

The activity in the Director Plan is displayed in the following table:

Authorized Shares Available for Future Award Grants	Six Months Ended June 30, 2019		From Inception to June 30, 2019
Beginning balance	49,163		300,000
Number of awards granted	(14,300	)	(289,140	)
Number of awards forfeited or expired	—		24,003
Ending balance	34,863		34,863
Number of option awards exercised	1,131		119,092
Number of restricted stock awards vested	—		71,541

The activity in the Stock Plan is displayed in the following table:

Authorized Shares Available for Future Award Grants	Six Months Ended June 30, 2019		From Inception to June 30, 2019
Beginning balance	890,857		1,900,000
Additional shares authorized	—		1,500,000
Number of awards granted	(117,553	)	(3,140,620	)
Number of awards forfeited or expired	36,006		549,930
Ending balance	809,310		809,310
Number of option awards exercised	90,723		1,415,337
Number of unrestricted stock awards granted	—		9,370
Number of restricted stock awards vested	42,425		100,618

Remaining Stock-Based Compensation Expense

We expect this compensation to be recognized over the remainder of 2019 and subsequent years according to the table below, except with respect to awards that are accelerated by the Board of Directors, in which case we will recognize any remaining compensation expense in the period in which the awards are accelerated.

2019	$	2,650
2020	3,614
2021	1,672
2022	178
2023	—
Total	$	8,114