Notes and Contracts Payable (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Notes and Contracts Payable

	December 31,
	2014		2013
	(in thousands, except percentages)
4.60% senior unsecured notes due November 15, 2024, net of unamortized discount of $74 at December 31, 2014, effective interest rate of 4.60%	$	299,926	$	—
4.30% senior unsecured notes due February 1, 2023, net of unamortized discount of $760 and $837 at December 31, 2014 and 2013, respectively, effective interest rate of 4.35%		249,240		249,163
Trust deed notes with maturities through 2032, collateralized by land and buildings with a net book value of $52,414 and $55,206 at December 31, 2014 and 2013, respectively, weighted-average interest rate of 5.39% and 5.42%, at December 31, 2014 and 2013, respectively		34,420		38,151
Other notes and contracts payable with maturities through 2020, weighted-average interest rate of 5.30% and 2.96% at December 31, 2014 and 2013, respectively		3,751		22,971
	$	587,337	$	310,285

Aggregate Annual Maturities of Notes and Contracts Payable

The aggregate annual maturities for notes and contracts payable in each of the five years after December 31, 2014, are as follows:

Year	Annual maturities
	(in thousands)
2015	$	4,899
2016		4,458
2017		5,009
2018		3,861
2019		3,593
Thereafter		565,517
	$	587,337