XML 46 R16.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Stock-Based Compensation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2015
Stock-Based Compensation [Abstract] |
Schedule of weighted average assumptions used for estimating the grant-date fair value of each option grant | The fair value of options granted during the three months ended March 31, 2015, were established at the date of grant using a Black-Scholes option pricing model with the weighted average assumptions as follows:
|  | Three Months Ended |
|  | March 31 |
|  | 2015 |
Expected dividend yield |  |  | 3.72 | %
Risk-free interest rate |  |  | 1.54 | %
Expected volatility |  |  | 30.77 | %
Expected term (in years) |  |  | 7.0 |
Weighted average fair value of options |  | $ | 6.60 |

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration