Note 6 - Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Stock options and SARs	$	105	$	121	$	178	$	944
Restricted stock		209		140		397		264
Performance shares		237		177		457		282
Total share-based compensation expense	$	551	$	438	$	1,032	$	1,490
Related income tax benefit	$	67	$	74	$	125	$	185

Share-based Payment Arrangement, Option, Activity [Table Text Block]

						Weighted Average
	No. of			Weighted Average		Remaining Life		Aggregate
	Shares			Exercise Price		(in years)		Intrinsic Value
Outstanding, January 1, 2019		676,846		$	15.70		2.99	$	2,230
Granted(1)		142,009			17.68
Exercised		(75,144	)		6.70
Cancelled		(54,148	)		19.36
Outstanding, June 30, 2019		689,563		$	16.80		3.28	$	1,243
Options exercisable, June 30, 2019		517,593		$	16.42		2.75	$	1,239

Share-based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block]

						Weighted Average
	No. of			Weighted Average		Remaining Life		Aggregate
	Shares			Exercise Price		(in years)		Intrinsic Value
Outstanding, January 1, 2019		182,894		$	18.99		2.61	$	89
Granted(1)		42,841			17.77
Exercised		-			-
Cancelled		(16,162	)		20.01
Outstanding, June 30, 2019		209,573		$	18.66		2.57	$	40
Options exercisable, June 30, 2019		168,478		$	18.88		2.07	$	40

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

			Weighted Average
	No. of		Grant Date
	Shares		Fair Value
Outstanding, January 1, 2019		92,032	$	19.46
Granted		48,829		17.41
Vested		-		-
Cancelled		-		-
Outstanding, June 30, 2019		140,861	$	18.75

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

				Weighted Average
	No. of			Grant Date
	Shares			Fair Value
Outstanding, January 1, 2019		194,378		$	20.08
Granted		14,068			17.77
Vested		-			-
Cancelled		(1,000	)		17.75
Outstanding, June 30, 2019		207,446		$	19.93