Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Share-based Compensation [Abstract]

Schedule of Stock Options Outstanding & Exercisable by Exercise Price Range

	Number of Common Shares Subject to SARs	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life	Aggregate Intrinsic  Value
Outstanding at January 1	2,338	$	27.37
Exercised	2,024	27.93
Forfeited	—	—
Outstanding at December 31	314	$	23.77	0.1 years	$	2.779
Exercisable at December 31	314	$	23.77	0.1 years	$	2.779

Schedule of Stock Appreciation Rights Outstanding & Exercisable by Exercise Price

The following summarizes the changes to Peoples' outstanding SARs for the year ended December 31, 2017:

	Number of Common Shares Subject to SARs	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life	Aggregate Intrinsic  Value
Outstanding at January 1	2,338	$	27.37
Exercised	2,024	27.93
Forfeited	—	—
Outstanding at December 31	314	$	23.77	0.1 years	$	2.779
Exercisable at December 31	314	$	23.77	0.1 years	$	2.779

Schedule of Restricted Shares Activity

The following summarizes the changes to Peoples’ outstanding restricted common shares for the year ended December 31, 2017:

	Time Vesting			Performance Vesting
	Number of Common Shares	Weighted-Average Grant Date Fair Value		Number of Common Shares	Weighted-Average Grant Date Fair Value
Outstanding at January 1	40,316	$	21.85	142,415	$	21.95
Awarded	7,550	31.36		61,457	32.42
Released	12,484	24.42		21,050	21.75
Forfeited	2,300	24.69		6,604	25.25
Outstanding at December 31	33,082	$	22.85	176,218	$	25.50

Summary of Stock-Based Compensation and Related Tax Benefit

The following summarizes the amount of stock-based compensation expense and related tax benefit recognized at December 31:

(Dollars in thousands)	2017			2016			2015
Total stock-based compensation	$	1,747		$	1,332		$	1,843
Recognized tax benefit	(367		)	(466		)	(645		)
Net expense recognized	$	1,380		$	866		$	1,198