Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Annual Rental Commitments under Various Non-cancellable Operating Leases

Future minimum annual rental commitments as of December 31, 2015 under various non-cancellable operating leases for our office facilities, which expire at various dates through 2030, are as follows:

Rental Commitments for Years Ended December 31,
amounts in thousands
2016	$	12,769
2017		12,213
2018		10,327
2019		8,482
2020		8,313
2021-2030		42,173
Total minimum operating lease payments	$	94,277