XML 27 R15.htm IDEA: XBRL DOCUMENT v3.19.1

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Taxes [Abstract]
Income Taxes	8. Income Taxes The effective income tax rate for income taxes as a percentage of income before income taxes was 22.2% and 36.9% for the three months ended March 31, 2019 and 2018, respectively.  The decrease was primarily due to unfavorable discrete tax items in the first quarter of 2018 including equity vesting at an amount less than original book value and negative impacts from tax reform, and favorable discrete tax items in the first quarter of 2019 related to stock option exercises.

X

- References

No definition available.

+ Details

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

X

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

+ Details

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