Consolidated Balance Sheets (Parenthetical) - $ / shares |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Balance Sheets [Abstract] | ||
| Preferred stock, no par value | ||
| Preferred stock, shares authorized | 200,000 | 200,000 |
| Preferred stock, shares issued | 15,000 | 15,000 |
| Common stock, no par value | ||
| Common stock, shares authorized | 10,000,000 | 10,000,000 |
| Common stock, shares issued | 5,027,433 | 5,027,433 |
| Treasury stock, shares | 183,354 | 136,547 |