| Schedule of Condensed Income Statement and Balance Sheet Related to Joint Ventures [Table Text Block] |
Unaudited condensed balance sheet information of the Company’s unconsolidated and consolidated joint ventures as of September 30, 2012 and December 31, 2011 and condensed statements of operations for the nine months ended September 30, 2012 and September 30, 2011 are as follows: Statement of Operations for the nine months ending September 30, 2012 (In thousands) | | | | | | | | | | | | | | | | | | | | | | | | | | UNCONSOLIDATED | | CONSOLIDATED | | Petro Travel Plaza Holdings | | 18-19 West LLC | | Five West Parcel | | Tejon Mountain Village | | Total | | Centennial-VIE | Gross revenues | $ | 92,564 |
| | $ | 66 |
| | $ | 1,818 |
| | $ | — |
| | $ | 94,448 |
| | $ | 267 |
| Net income (loss) | $ | 3,388 |
| | $ | 59 |
| | $ | (267 | ) | | $ | (63 | ) | | $ | 3,117 |
| | $ | (388 | ) | Partner’s share of net income (loss) | $ | 1,355 |
| | $ | 30 |
| | $ | (134 | ) | | $ | (32 | ) | | $ | 1,219 |
| | $ | (119 | ) | Equity in income (losses) | $ | 1,783 |
| | $ | 29 |
| | $ | (133 | ) | | $ | (31 | ) | | $ | 1,648 |
| | $ | (269 | ) | Balance Sheet Information as of September 30, 2012 | | | | | | | | | | | | Current assets | $ | 8,656 |
| | $ | 57 |
| | $ | 1,129 |
| | $ | 429 |
| | $ | 10,271 |
| | $ | 263 |
| Property and equipment, net | 44,125 |
| | 4,420 |
| | 19,495 |
| | 91,572 |
| | 159,612 |
| | 71,258 |
| Other assets | 255 |
| | — |
| | 433 |
| | — |
| | 688 |
| | — |
| Long-term debt | (17,543 | ) | | — |
| | (11,000 | ) | | — |
| | (28,543 | ) | | — |
| Other liabilities | (3,651 | ) | | (37 | ) | | (221 | ) | | (640 | ) | | (4,549 | ) | | (1,430 | ) | Net assets | $ | 31,842 |
| | $ | 4,440 |
| | $ | 9,836 |
| | $ | 91,361 |
| | $ | 137,479 |
| | $ | 70,091 |
|
Statement of Operations for the nine months ending September 30, 2011 (In thousands) | | | | | | | | | | | | | | | | | | | | | | | | | | UNCONSOLIDATED | | CONSOLIDATED | | Petro Travel Plaza Holdings | | 18-19 West LLC | | Five West Parcel | | Tejon Mountain Village | | Total | | Centennial-VIE | Gross revenues | $ | 86,712 |
| | $ | — |
| | $ | 376 |
| | $ | — |
| | $ | 87,088 |
| | $ | 216 |
| Net income (loss) | $ | 1,917 |
| | $ | (79 | ) | | $ | (1,016 | ) | | $ | (40 | ) | | $ | 782 |
| | $ | (221 | ) | Partner’s share of net income (loss) | $ | 767 |
| | $ | (40 | ) | | $ | (508 | ) | | $ | (20 | ) | | $ | 199 |
| | $ | (77 | ) | Equity in income (losses) | $ | 1,150 |
| | $ | (39 | ) | | $ | (508 | ) | | $ | (20 | ) | | $ | 583 |
| | $ | (144 | ) | Balance Sheet Information as of December 31, 2011 | | | | | | | | | | | | Current assets | $ | 16,940 |
| | $ | 12 |
| | $ | 116 |
| | $ | 1,020 |
| | $ | 18,088 |
| | $ | 325 |
| Property and equipment, net | 44,092 |
| | 4,255 |
| | 16,509 |
| | 85,127 |
| | 149,983 |
| | 67,684 |
| Other assets | 307 |
| | — |
| | 37 |
| | — |
| | 344 |
| | — |
| Long-term debt | (18,076 | ) | | — |
| | (8,625 | ) | | — |
| | (26,701 | ) | | — |
| Other liabilities | (2,648 | ) | | — |
| | (201 | ) | | (1,122 | ) | | (3,971 | ) | | (1,106 | ) | Net assets | $ | 40,615 |
| | $ | 4,267 |
| | $ | 7,836 |
| | $ | 85,025 |
| | $ | 137,743 |
| | $ | 66,903 |
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