On June 30, 2019, the Company had stock options, stock awards and stock appreciation rights (SARs) outstanding under its 2011 Incentive Compensation Plan. SARs granted prior to 2015 are cash-settled, and SARs granted after 2014 are stock-settled. Stock options and SARs granted prior to 2017 generally cliff vested after two years. Starting in 2017, stock options and SARs have a three-year graded vesting feature, with one-third of the awards vesting each year. The Company has elected the straight-line method of expense attribution for the stock options and SARs with the graded vesting feature.

Compensation expense recorded for all stock options, stock awards and SARs was as follows:

(In thousands)
Three Months Ended June 30				Six Months Ended June 30
2019		2018		2019		2018
$	2,176	$	1,155	$	4,772	$	3,387

The quarter-over-quarter and year-over-year increases in stock-based compensation expense was primarily attributable to cash-settled SARs. This increase was partially offset by a decrease in stock-based compensation expense related to performance stock awards. The quarterly increase in cash-settled SARs compensation expense reflects an increase in the market value of Company stock during the second quarter of 2019 versus the decrease in the market value of Company stock during the second quarter of 2018.

Unrecognized compensation costs for stock options, stock awards and SARs were as follows:

(In thousands)	June 30, 2019		December 31, 2018
Stock options	$	2,557	$	1,655
Stock awards		4,959		3,180
SARs		5,473		3,566

The increases in unrecognized compensation costs for stock options, stock awards and SARs reflected the 2019 grants of:

	Shares
Stock options		68,220
Stock awards (at target)		41,969
SARs		148,388

The unrecognized compensation costs at June 30, 2019, are expected to be recognized over weighted-average period of 2.0 years for stock options, stock awards and SARs.