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Notes Payable (NAB Australian Corporate Term Loan) (Narrative) (Details)
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0 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 24, 2011
BOSI Australia Corporate Credit Facility [Member]
USD ($)
|
Jun. 24, 2011
BOSI Australia Corporate Credit Facility [Member]
AUD
|
Dec. 31, 2010
BOSI Australia Corporate Credit Facility [Member]
USD ($)
|
Dec. 31, 2010
BOSI Australia Corporate Credit Facility [Member]
AUD
|
Dec. 31, 2012
NAB Australian Corporate Credit Facility [Member]
USD ($)
|
Dec. 31, 2012
NAB Australian Corporate Credit Facility [Member]
AUD
|
Jun. 24, 2011
NAB Australian Corporate Credit Facility [Member]
USD ($)
|
Jun. 24, 2011
NAB Australian Corporate Credit Facility [Member]
AUD
|
Dec. 31, 2012
NAB Australian Corporate Term Loan [Member]
USD ($)
|
Dec. 31, 2012
NAB Australian Corporate Term Loan [Member]
AUD
|
Jun. 24, 2011
NAB Australian Corporate Term Loan [Member]
USD ($)
|
Jun. 24, 2011
NAB Australian Corporate Term Loan [Member]
AUD
|
Jun. 24, 2011
NAB Australian Corporate Line Of Credit [Member]
USD ($)
|
Jun. 24, 2011
NAB Australian Corporate Line Of Credit [Member]
AUD
|
Aug. 02, 2011
NAB Australian Corporate Revolver [Member]
USD ($)
|
Aug. 02, 2011
NAB Australian Corporate Revolver [Member]
AUD
|
Dec. 31, 2012
NAB Australian Corporate Revolver [Member]
USD ($)
|
Dec. 31, 2012
NAB Australian Corporate Revolver [Member]
AUD
|
Dec. 31, 2012
NAB Guarantee Facility [Member]
USD ($)
|
Dec. 31, 2012
NAB Guarantee Facility [Member]
AUD
|
Dec. 31, 2012
Minimum [Member]
NAB Australian Corporate Credit Facility [Member]
USD ($)
|
Dec. 31, 2012
Minimum [Member]
NAB Australian Corporate Credit Facility [Member]
AUD
|
Dec. 31, 2012
Maximum [Member]
NAB Australian Corporate Credit Facility [Member]
USD ($)
|
Dec. 31, 2012
Maximum [Member]
NAB Australian Corporate Credit Facility [Member]
AUD
|
|
| Debt Instrument [Line Items] | ||||||||||||||||||||||||
| Line of credit facility, maximum borrowing capacity | $ 115,800,000 | 110,000,000 | $ 110,500,000 | 105,000,000 | $ 94,700,000 | 90,000,000 | $ 9,500,000 | 9,000,000 | $ 10,400,000 | 10,000,000 | $ 5,200,000 | 5,000,000 | ||||||||||||
| Repayment of debt | 1,600,000 | 1,500,000 | 6,300,000 | 6,000,000 | 9,700,000 | 9,000,000 | ||||||||||||||||||
| Line of credit facility, amount outstanding | 105,800,000 | 100,500,000 | 101,700,000 | 100,500,000 | 75,300,000 | 72,500,000 | 0 | |||||||||||||||||
| Line of credit facility, term | 3 years | 3 years | ||||||||||||||||||||||
| Spread on variable interest rate | 2.15% | 2.15% | 2.90% | 2.90% | ||||||||||||||||||||
| Annual principal payment | 7,300,000 | 7,000,000 | 9,400,000 | 9,000,000 | ||||||||||||||||||||
| Line of credit facility, maximum amount transferable outside of Australia | $ 4,200,000 | 4,000,000 | ||||||||||||||||||||||
| Interest rate swap term | 5 years | 5 years | ||||||||||||||||||||||
| Percentage of variable interest debt converted to fixed rate | 100.00% | 100.00% | ||||||||||||||||||||||
| Swap contract rate | 5.50% | 5.50% | ||||||||||||||||||||||