XML 52 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Activity of Restricted Stock Awards

The following table summarizes the activity of restricted stock awards adjusted for a 2-for-1 stock split on September 20, 2017 as of December 31:

		Year Ended December 31,
		2017								2016								2015
		Number of Shares				Weighted average fair value per award				Number of Shares				Weighted average fair value per award				Number of Shares				Weighted average fair value per award
Beginning of period			86,300				14.10				77,990				12.46				66,780				11.39
Granted			32,000				27.79				32,300				16.01				32,000				13.18
Vested			(24,870	)			28.60				(22,444	)			15.86				(20,590	)			13.17
Forfeited			(1,080	)			37.06				(1,546	)			15.77				(200	)			13.04
Nonvested, end of period			92,350				19.17				86,300				14.10				77,990				12.46

X

- References

No definition available.

+ Details

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration