Acquired Intangible Assets And Liabilities

3 Months Ended

Mar. 31, 2013

Acquired Intangible Assets And Liabilities

4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of March 31, 2013 and December 31, 2012.  

	Balance as of
(Amounts in thousands)	March 31, 2013	December 31, 2012
Acquired in place lease value:
Gross amount	$          722,434	$          720,373
Accumulated amortization	(380,730)	(367,088)
Net	$          341,704	$          353,285
Acquired above market leases:
Gross amount	$          131,278	$          134,480
Accumulated amortization	(72,199)	(69,425)
Net	$            59,079	$            65,055
Acquired below market leases:
Gross amount	$          284,061	$          285,509
Accumulated amortization	(142,804)	(137,276)
Net	$          141,257	$          148,233

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $3.0 million and $2.2 million for the three months ended March 31, 2013 and 2012, respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 7.0 years and 5.2 years, respectively, as of March 31, 2013. Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2014 is as follows:

(Amounts in thousands)
2014	$           9,925
2015	8,933
2016	7,671
2017	6,268
2018	2,998

Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.9 million and $12.0 million for the threemonths ended March 31, 2013 and 2012, respectively. The expected average amortization period for acquired in place lease value is 7.1 years as of March 31, 2013. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 5.6 years as of March 31, 2013. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2014 is as follows:

(Amounts in thousands)
2014	$         54,529
2015	45,256
2016	42,247
2017	29,298
2018	26,547

Digital Realty Trust, L.P. [Member]

Acquired Intangible Assets And Liabilities

4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of March 31, 2013 and December 31, 2012.  

	Balance as of
(Amounts in thousands)	March 31, 2013	December 31, 2012
Acquired in place lease value:
Gross amount	$          722,434	$          720,373
Accumulated amortization	(380,730)	(367,088)
Net	$          341,704	$          353,285
Acquired above market leases:
Gross amount	$          131,278	$          134,480
Accumulated amortization	(72,199)	(69,425)
Net	$            59,079	$            65,055
Acquired below market leases:
Gross amount	$          284,061	$          285,509
Accumulated amortization	(142,804)	(137,276)
Net	$          141,257	$          148,233

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $3.0 million and $2.2 million for the three months ended March 31, 2013 and 2012, respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 7.0 years and 5.2 years, respectively, as of March 31, 2013. Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2014 is as follows:

(Amounts in thousands)
2014	$           9,925
2015	8,933
2016	7,671
2017	6,268
2018	2,998

Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.9 million and $12.0 million for the threemonths ended March 31, 2013 and 2012, respectively. The expected average amortization period for acquired in place lease value is 7.1 years as of March 31, 2013. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 5.6 years as of March 31, 2013. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2014 is as follows:

(Amounts in thousands)
2014	$         54,529
2015	45,256
2016	42,247
2017	29,298
2018	26,547