Stock Repurchase Program (Narrative) (Details) - shares |
1 Months Ended | 3 Months Ended | 9 Months Ended | 93 Months Ended | 96 Months Ended | 102 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2015 |
May. 31, 2015 |
Apr. 30, 2015 |
Mar. 31, 2015 |
Feb. 28, 2015 |
Jan. 31, 2015 |
Dec. 31, 2014 |
Nov. 30, 2014 |
Oct. 31, 2014 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Jun. 30, 2015 |
Sep. 30, 2014 |
Dec. 31, 2014 |
Jun. 30, 2015 |
Jun. 30, 2015 |
Dec. 31, 2007 |
|
| Equity, Class of Treasury Stock [Line Items] | |||||||||||||||||
| Number of shares authorized to be repurchased | 1,000,000 | ||||||||||||||||
| Remaining number of shares authorized to be repurchased | 816,296 | 816,296 | 816,296 | 816,296 | 816,296 | ||||||||||||
| Maximum repurchases allowed under provision through calendar year | 450,000 | ||||||||||||||||
| Maximum repurchases allowed under provision annually per individual | 50,000 | ||||||||||||||||
| Treasury Stock, Shares, Acquired | 250 | 250 | 250 | 2,183,454 | 2,183,704 | 2,183,704 | |||||||||||
| Maximum [Member] | |||||||||||||||||
| Equity, Class of Treasury Stock [Line Items] | |||||||||||||||||
| Maximum repurchases allowed under provision through calendar year | 3,000,000 | ||||||||||||||||